[Webkit-unassigned] [Bug 51688] [Qt] Np API plugins rendering issues.

Mon Jan 31 09:35:07 PST 2011

https://bugs.webkit.org/show_bug.cgi?id=51688

--- Comment #5 from Janne Koskinen <koshuin at gmail.com>  2011-01-31 09:35:07 PST ---
What we need is how much data you expect to get through? A test case would be great.
Have you tested this on Symbian native app and you have reliable performance difference with Symbian app vs. QtWebkit?

The viewfinder on camera is implemented as DSA so the data doesn't actually have to be copied to client app.
So I'm not sure if you even can get acceptable frame rates with copying it first to bitmap and back to VG image for blitting.

We have an augment reality app that draws on top of viewfinder. And there we had to copy the data from viewfinder in order to be able to draw our components on top of it (due to VG changed how you do DSA) and we couldn't get acceptable frame rates at all. Our application is fullscreen app so 200x200 viewport might be ok provided that framerates are not very high.

There is open Qt bug that should give massive boost with removing one copy from the pipeline QT-2505.

The other alternative and would be my recommendation is to not to copy the images at all. However something tells me that you need to copy them over... reason?

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